GN30-12 rotary indoor high-voltage disconnector is a new type of rotary contact disconnector. Its main structure is to fix two groups of insulators and contacts on the upper and lower planes of the three-phase common chassis, and to achieve switch on by rotating the contact.The GN30-12D switch is an additional form with grounding knife on the basis of the GN30-12 switch, which can meet the needs of different power systems. This product is compact in design, small in point space, strong in insulation capacity, and easy to install and adjust.
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summaryAs a special accessory of the arrester, the disconnector is used in series with the arrester. The purpose is to use power frequency short circuit current to make the disconnector act when the arrester is abnormal and fails, so that the grounding terminal of the disconnector can be automatically disconnected, and the arrester can be withdrawn from operation to prevent further expansion of the accident.
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FN12-12 and FN12-12R combined apparatus are three-phase high-voltage switchgear with a rated voltage of 12KV and a rated frequency of 50Hz. They are used for breaking and closing load current, closed-loop current, no-load transformer and cable charging current, closing short circuit current, and load switches equipped with grounding switches.
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FGW9-12 high-voltage load disconnector is a high-performance disconnector developed by our company by absorbing foreign advanced technology. It has the advantages of reliable contact, large current carrying capacity, and certain arc protection capability. It is used in the power system with the rated voltage of 10kV to connect and isolate the power supply when there is voltage.
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GN38-12KV series indoor disconnectors are designed and manufactured to meet the needs of compact and miniaturized development of fixed high-voltage cabinets and ring network cabinets. It has a three position structure, fully insulated bottom plate, and is equipped with coaxial locking and perfect mechanical interlocking mechanism, which is compact in shape.
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GW4 type outdoor high-voltage disconnector is used for three-phase AC 50Hz outdoor high-voltage electrical equipment, which is used for opening and closing of lines under the condition of voltage and no load, and for electrical isolation of electrical equipment such as overhauled high-voltage buses and circuit breakers from live high-voltage lines. It can also be used for opening and closing small capacitive or inductive currents. When the knife switch is in the normal opening position, an insulation distance meeting the safety requirements can be provided.
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The performance of JN15-12 household air high-voltage grounding switch meets the requirements of GB1985-89 AC High Voltage Disconnectors and Grounding Switches and IEC129, and is applicable to 12kV and below AC 50Hz power systems. It can be used together with various types of high-voltage switch cabinets as grounding protection.Advanced design and reliable technical performance; Simple structure, convenient installation and debugging; Have the ability of quick opening and closing.□ Operating environment1. The altitude shall not exceed 1000m;2.
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1. After opening, establish a reliable insulation gap to separate the equipment or lines to be repaired from the power supply with an obvious disconnection point to ensure the safety of maintenance personnel and equipment [2].2. Change the circuit according to the operation needs.3. It can be used to open and close the small current in the line, such as the charging current of bushing, bus, connector and short cable, the capacitive current of switch voltage equalizing capacitor, the circulating current during double bus switching and the excitation current of voltage transformer.4.
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The JN2-40.5 indoor high-voltage grounding switch is an indoor high-voltage electrical appliance designed in accordance with the relevant grounding switches in GB1985-89 AC High Voltage Disconnectors and Grounding Switches, which is equivalent to IEC129-84 Disconnectors and Grounding Switches and IEC694-84 Common Terms for High Voltage Switchgear and Control Equipment.JN2-40.5 grounding switch is applicable to 35KV and below three-phase AC 50HZ power system, and has voltage monitoring device.
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Product OverviewGW1-12G (D) series outdoor high-voltage disconnectors are unipolar high-voltage switchgear. They are used to open and close the circuit when there is voltage or no load in the outdoor 12KV line network. The switches with grounding knives are equipped with CS mouth type manual mechanisms to prevent the misoperation of live grounding wires and grounding wires, "closing", etc.
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Low-voltage cable lines are widely used in low-voltage power distribution systems because of their reliable operation, lack of poles, lack of ground occupation, lack of unsightliness, and less influence from the outside world.ApplicationFixed indoor, outdoor and underground installations.StandardsHD 603-5D SI, IEC 60502-1,IEC 60332-1 Cat. B.
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(H) GW5 type outdoor high-voltage disconnector is used for three-phase AC 50Hz outdoor high-voltage electrical equipment, which is used for opening and closing of lines under the condition of voltage and no load, and for electrical isolation of electrical equipment such as overhauled high-voltage buses and circuit breakers from live high-voltage lines. It can also be used for opening and closing small capacitive or inductive currents. When the knife switch is in the normal opening position, an insulation distance meeting the safety requirements can be provided.
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GW9-10 outdoor high-voltage disconnector is a single-phase AC 50HZ high-voltage switchgear, which is used in the power system with the rated voltage of 10KV to connect or disconnect the power supply with voltage and without load.The disconnector is operated with insulating rod.□ Operating environmenta. Altitude not exceeding 1000mb. Ambient air temperature: upper limit+40 ° C, lower limit - 30 ° C in general areas, and - 40 ° C in alpine areasc. Wind pressure shall not exceed 700Pa (equivalent to wind speed of 34m/s)D. Seismic intensity shall not exceed 8 degreesE.
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JN22-40.5/31.5 indoor high-voltage grounding switch (hereinafter referred to as grounding switch) is an advanced product with high technical parameters and performance developed by Xi'an High Voltage Apparatus Research Institute. Through comprehensive assessment, its performance conforms to the provisions of GB1985-89 AC High Voltage Disconnectors and Earthing Switches. It is applicable to the 40.5kV AC 50Hz power system.
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Distribution ArresterProduct use conditions:a) Suitable for indoor and outdoor use;b) Ambient temperature -40°C~+40°C;c) The altitude does not exceed 3000m (the porcelain sleeve type does not exceed 1000m);d) The power frequency is not less than 48Hz and not more than 62 Hz;e) The long-term power frequency voltage applied between the arrester terminals does not exceed the continuous operating voltage of the arrester;f) Areas with an earthquake intensity of 8 degrees or below;g) The maximum wind speed shall not exceed 35m/s. Product Model Description:According to JB/T 8459-1996 "Surge
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(H) GW4 type outdoor high-voltage disconnector is used for three-phase AC 50Hz outdoor high-voltage electrical equipment, which is used for opening and closing of lines under the condition of voltage and no load, and for electrical isolation of electrical equipment such as overhauled high-voltage buses and circuit breakers from live high-voltage lines. It can also be used for opening and closing small capacitive or inductive currents. When the knife switch is in the normal opening position, an insulation distance meeting the safety requirements can be provided.
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Conductive partThe fixed contact is composed of a copper plate bent into a right angle, and the perforated end of the fixed contact can be connected with the bus through a screw; The other end is short, and it contacts the moving blade (moving contact) when closing.Two copper plates form a contact strip, also known as a moving contact, which can rotate around the shaft for a certain angle. When closing, it holds the static contact. There is a clamping spring between the two copper plates to adjust the contact pressure between the dynamic and static contacts.
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(H) GW13 type neutral point disconnector is used for three-phase AC 50Hz outdoor high-voltage electrical equipment, which is used for opening and closing the neutral point connection of transformer without load. When the knife switch is in the normal opening position, an insulation distance meeting the safety requirements can be provided.□ Structure1. Single pole V-shaped double post rotary structure, with small floor area, mainly consists of base, post insulator, conductive circuit, operating mechanism, etc.2.
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1. The altitude shall not exceed 1000m.2. The ambient temperature shall not be higher than+40 ℃ and not lower than - 10 ℃.3. The daily average relative humidity is not more than 95%, and the monthly average is not more than 90%.4. The seismic intensity shall not exceed 8 degrees.5. The installation site shall be free of gas, steam, chemical precipitation, smoke, dust, dirt and explosive corrosive substances that seriously affect the insulation and conductivity of the grounding switch.6.
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It is mainly used to break and close the load current, overload current and short-circuit current of the power system. It is suitable for protection and control of substations, industrial and mining enterprises, and urban and rural distribution networks, especially for places with frequent operations and urban automatic distribution networks. This product is matched with the controller, which can meet the requirements of the distribution automation system, and can reliably and effectively complete the traditional recloser function.
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purposeHigh voltage disconnector is a kind of high-voltage equipment used to connect or isolate power supply under the condition of voltage and no load.□ Service conditions1. Altitude not exceeding 1000m2. Ambient air temperature: upper limit+40 ° C in general area, lower limit 30 ° C in general area3. The wind pressure shall not exceed 700Pa. (equivalent to wind 34m/s)4. The seismic intensity shall not exceed 8 degrees;5. No place with frequent violent movements;6.
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ZFN21-12D/630-20, ZFN21-12DR/T125-31.5 high-voltage vacuum load switch and combination apparatus are used in three-phase AC 10KV, 50Hz power distribution system. It has the advantages of compact structure, small volume, light weight, long service life, strong making and breaking capacity, safety and reliability, etc.
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The discharge counter for lightning arrester is a high-voltage electrical apparatus used to monitor the discharge action of lightning arrester. Its structure consists of nonlinear resistance, electromagnetic counter and some electronic components. Under normal operating voltage, the leakage current flowing through the counter is very small, and the counter does not act.
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The role of drop-out fuses10kV equipment can be installed on the high-voltage side of the transformer on the pole, where the transformer and capacitor are connected to the line. The drop-out fuse can effectively protect the circuit from overload and short-circuit. At the same time, it can also be installed at the end of a long line or on a branch line, which can provide extended protection for areas that cannot be protected by relays.
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